/*
 * Copyright (c) 2013, Klaus Hauschild
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided
 * that the following conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright notice, this list of conditions and
 *     the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above copyright notice, this list of conditions
 *     and the following disclaimer in the documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package de.hauschild.worldcupn.core;

import playn.core.GroupLayer;
import playn.core.Layer;
import playn.core.PlayN;
import de.hauschild.utilsn.core.Entity;
import de.hauschild.utilsn.core.FramesPerSecond;
import de.hauschild.utilsn.core.TextBuilder;

/**
 * @since 0.1.0
 * 
 * @author Klaus Hauschild
 */
public class Fps implements Entity {

  private final FramesPerSecond fps = new FramesPerSecond();
  private final GroupLayer layer;
  private final TextBuilder textBuilder = TextBuilder.newBuilder().withFontName("Curier New").withFontSize(12);

  public Fps() {
    layer = PlayN.graphics().createGroupLayer();
    layer.setDepth(Float.MAX_VALUE);
  }

  public Layer getLayer() {
    return layer;
  }

  @Override
  public void paint(final float alpha) {
    fps.paint(alpha);
  }

  @Override
  public void update(final int delta) {
    fps.update(delta);
    layer.clear();
    layer.add(textBuilder.create(String.format("%.0f fps", fps.getFPS())));
  }

}
